﻿using Bricks.Component.Utils.Const;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.Mvc;

namespace Bricks.Site.Web.Controllers
{
    public class CommonController : Controller
    {
        //[HttpPost]
        //public ActionResult UploadImage()
        //{
        //    //string savePath = "Upload/Images/";
        //    //string saveUrl = "Upload/Images/";
        //    //string fileTypes = "gif,jpg,jpeg,png,bmp";
        //    //int maxSize = 1000000;
        //    Hashtable hash = new Hashtable();
        //    HttpPostedFileBase file = Request.Files["imgFile"];
        //    if (file == null)
        //    {
        //        hash = new Hashtable();
        //        hash["error"] = 0;
        //        hash["url"] = "请选择文件";
        //        return Json(hash);
        //    }
        //    //string dirPath = AppDomain.CurrentDomain.BaseDirectory
        //    //AppDomain.CurrentDomain.BaseDirectory
        //    //string dirPath = Server.MapPath(savePath);
        //    string dirPath = Server.MapPath("~/" + ConfigConst.ImageUploadPath);
        //    //如果目录不存在，则新建
        //    if (!Directory.Exists(dirPath))
        //    {
        //        //hash = new Hashtable();
        //        //hash["error"] = 0;
        //        //hash["url"] = "上传目录不存在";
        //        //return Json(hash);
        //        Directory.CreateDirectory(dirPath);
        //    }
        //    string fileName = file.FileName;
        //    string fileExt = Path.GetExtension(fileName).ToLower();
        //    ArrayList fileTypeList = ArrayList.Adapter(ConfigConst.ImageType.Split(','));
        //    if (file.InputStream == null || file.InputStream.Length > ConfigConst.ImageUploadMaxSize)
        //    {
        //        hash = new Hashtable();
        //        hash["error"] = 0;
        //        hash["url"] = "上传文件大小超过限制";
        //        return Json(hash);
        //    }
        //    if (string.IsNullOrEmpty(fileExt) || Array.IndexOf(ConfigConst.ImageType.Split(','), fileExt.Substring(1).ToLower()) == -1)
        //    {
        //        hash = new Hashtable();
        //        hash["error"] = 0;
        //        hash["url"] = "上传文件扩展名是不允许的扩展名";
        //        return Json(hash);
        //    }
        //    //给文件重命名
        //    string newFileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff", DateTimeFormatInfo.InvariantInfo) + fileExt;
        //    string filePath = dirPath + newFileName;
        //    file.SaveAs(filePath);
        //    string fileUrl = ConfigConst.ImageUploadPath + newFileName;
        //    hash = new Hashtable();
        //    hash["error"] = 0;
        //    hash["url"] = fileUrl;
        //    return Json(hash, "text/html;charset=UTF-8");
        //}

        /// <summary>
        /// 上传文件
        /// </summary>
        /// <param name="childrenPath">下级Path（如果需要下级Path，可填写）</param>
        /// <returns></returns>
        [HttpPost]
        public ActionResult UploadFile(string childrenPath = null)
        {
            string savePath = ConfigConst.FileUploadPath;
            //如果填写了下级Path，则合并路径
            if (!String.IsNullOrEmpty(childrenPath))
                savePath = Path.Combine(savePath, childrenPath);
            //string saveUrl = "/Upload/Files/";
            string fileTypes = ConfigConst.FileType;
            int maxSize = ConfigConst.FileUploadMaxSize;
            Hashtable hash = new Hashtable();
            HttpPostedFileBase file = Request.Files["imgFile"];
            if (file == null)
            {
                hash = new Hashtable();
                hash["error"] = 0;
                hash["url"] = "请选择文件";
                return Json(hash);
            }
            //string dirPath = Server.MapPath(savePath);
            string dirPath = Server.MapPath("~/" + savePath);
            if (!Directory.Exists(dirPath))
            {
                //hash = new Hashtable();
                //hash["error"] = 0;
                //hash["url"] = "上传目录不存在";
                //return Json(hash);
                Directory.CreateDirectory(dirPath);
            }
            string fileName = file.FileName;
            string fileExt = Path.GetExtension(fileName).ToLower();
            ArrayList fileTypeList = ArrayList.Adapter(fileTypes.Split(','));
            if (file.InputStream == null || file.InputStream.Length > maxSize)
            {
                hash = new Hashtable();
                hash["error"] = 0;
                hash["url"] = "上传文件大小超过限制";
                return Json(hash);
            }
            if (string.IsNullOrEmpty(fileExt) || Array.IndexOf(fileTypes.Split(','), fileExt.Substring(1).ToLower()) == -1)
            {
                hash = new Hashtable();
                hash["error"] = 0;
                hash["url"] = "上传文件扩展名是不允许的扩展名";
                return Json(hash);
            }
            string newFileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff", DateTimeFormatInfo.InvariantInfo) + fileExt;
            string filePath = Path.Combine(dirPath, newFileName);
            file.SaveAs(filePath);
            string fileUrl = Path.Combine(savePath, newFileName);
            hash = new Hashtable();
            hash["error"] = 0;
            hash["url"] = fileUrl;
            return Json(hash, "text/html;charset=UTF-8");
        }

        /// <summary>
        /// 管理文件
        /// </summary>
        /// <returns></returns>
        public ActionResult ManageFile()
        {
            //根目录路径，相对路径
            String rootPath = ConfigConst.FileUploadPath;
            //根目录URL，可以指定绝对路径，
            String rootUrl = ConfigConst.FileUploadPath;
            //图片扩展名
            String fileTypes = ConfigConst.FileType;

            String currentPath = "";
            String currentUrl = "";
            String currentDirPath = "";
            String moveupDirPath = "";

            //根据path参数，设置各路径和URL
            String path = Request.QueryString["path"];
            path = String.IsNullOrEmpty(path) ? "" : path;
            if (path == "")
            {
                currentPath = Server.MapPath(rootPath);
                currentUrl = rootUrl;
                currentDirPath = "";
                moveupDirPath = "";
            }
            else
            {
                currentPath = Server.MapPath(rootPath) + path;
                currentUrl = rootUrl + path;
                currentDirPath = path;
                moveupDirPath = Regex.Replace(currentDirPath, @"(.*?)[^\/]+\/$", "$1");
            }

            //排序形式，name or size or type
            String order = Request.QueryString["order"];
            order = String.IsNullOrEmpty(order) ? "" : order.ToLower();

            //不允许使用..移动到上一级目录
            if (Regex.IsMatch(path, @"\.\."))
            {
                Response.Write("Access is not allowed.");
                Response.End();
            }
            //最后一个字符不是/
            if (path != "" && !path.EndsWith("/"))
            {
                Response.Write("Parameter is not valid.");
                Response.End();
            }
            //目录不存在或不是目录
            if (!Directory.Exists(currentPath))
            {
                Response.Write("Directory does not exist.");
                Response.End();
            }

            //遍历目录取得文件信息
            string[] dirList = Directory.GetDirectories(currentPath);
            string[] fileList = Directory.GetFiles(currentPath);

            switch (order)
            {
                case "size":
                    Array.Sort(dirList, new NameSorter());
                    Array.Sort(fileList, new SizeSorter());
                    break;
                case "type":
                    Array.Sort(dirList, new NameSorter());
                    Array.Sort(fileList, new TypeSorter());
                    break;
                case "name":
                default:
                    Array.Sort(dirList, new NameSorter());
                    Array.Sort(fileList, new NameSorter());
                    break;
            }

            Hashtable result = new Hashtable();
            result["moveup_dir_path"] = moveupDirPath;
            result["current_dir_path"] = currentDirPath;
            result["current_url"] = currentUrl;
            result["total_count"] = dirList.Length + fileList.Length;
            List<Hashtable> dirFileList = new List<Hashtable>();
            result["file_list"] = dirFileList;
            for (int i = 0; i < dirList.Length; i++)
            {
                DirectoryInfo dir = new DirectoryInfo(dirList[i]);
                Hashtable hash = new Hashtable();
                hash["is_dir"] = true;
                hash["has_file"] = (dir.GetFileSystemInfos().Length > 0);
                hash["filesize"] = 0;
                hash["is_photo"] = false;
                hash["filetype"] = "";
                hash["filename"] = dir.Name;
                hash["datetime"] = dir.LastWriteTime.ToString("yyyy-MM-dd HH:mm:ss");
                dirFileList.Add(hash);
            }
            for (int i = 0; i < fileList.Length; i++)
            {
                FileInfo file = new FileInfo(fileList[i]);
                Hashtable hash = new Hashtable();
                hash["is_dir"] = false;
                hash["has_file"] = false;
                hash["filesize"] = file.Length;
                hash["is_photo"] = (Array.IndexOf(fileTypes.Split(','), file.Extension.Substring(1).ToLower()) >= 0);
                hash["filetype"] = file.Extension.Substring(1);
                hash["filename"] = file.Name;
                hash["datetime"] = file.LastWriteTime.ToString("yyyy-MM-dd HH:mm:ss");
                dirFileList.Add(hash);
            }
            //Response.AddHeader("Content-Type", "application/json; charset=UTF-8");
            //context.Response.Write(JsonMapper.ToJson(result));
            //context.Response.End();
            return Json(result, "text/html;charset=UTF-8", JsonRequestBehavior.AllowGet);
        }

        public class NameSorter : IComparer
        {
            public int Compare(object x, object y)
            {
                if (x == null && y == null)
                {
                    return 0;
                }
                if (x == null)
                {
                    return -1;
                }
                if (y == null)
                {
                    return 1;
                }
                FileInfo xInfo = new FileInfo(x.ToString());
                FileInfo yInfo = new FileInfo(y.ToString());

                return xInfo.FullName.CompareTo(yInfo.FullName);
            }
        }

        public class SizeSorter : IComparer
        {
            public int Compare(object x, object y)
            {
                if (x == null && y == null)
                {
                    return 0;
                }
                if (x == null)
                {
                    return -1;
                }
                if (y == null)
                {
                    return 1;
                }
                FileInfo xInfo = new FileInfo(x.ToString());
                FileInfo yInfo = new FileInfo(y.ToString());

                return xInfo.Length.CompareTo(yInfo.Length);
            }
        }

        public class TypeSorter : IComparer
        {
            public int Compare(object x, object y)
            {
                if (x == null && y == null)
                {
                    return 0;
                }
                if (x == null)
                {
                    return -1;
                }
                if (y == null)
                {
                    return 1;
                }
                FileInfo xInfo = new FileInfo(x.ToString());
                FileInfo yInfo = new FileInfo(y.ToString());

                return xInfo.Extension.CompareTo(yInfo.Extension);
            }
        }
    }
}
